Product information:

Size: 138 * 17mm
Spring wire length: 1.2m after stretching
Body material: TPU antifreeze material
Lamp detection voltage range: 5V-30V
Detection voltage range of ceiling lamp: 2v-30v
Display range of voltage display screen: 5V~30V
Display color of main light/ceiling light: red/green

Packing list:

1*Measuring pen